What do all these businesses have against Quebec anyway? Did Quebec insult their mothers or something?

Quebec laws unfortunately.

Holding a contest in Quebec requires submission of literally every single material related to the contest including all forms of advertisement before it starts, which requires approval by the QC Contest regulatory body.
The contest holders also have to pay a security deposit to the Regis, usually in the amount of prizes being awarded.

They also may have to pay a portion of the amount of prizes as a "fee" for holding the contest . Every little change or addition (such as an advertisement) to anything that wasn't in in the initial submission package has to be sent in and approved prior to running it.

Then afterwards full details of the winners, the prizes awarded, when the items were shipped, received, etc etc etc. has to be submitted within a certain time frame.